Click on the link below , you can then download the user guide
I have copied out some of the written instructions but in the manula there are pictures to follow
http://www.serviceforce.co.uk/pdfs/U26382.pdf
REPLACING AN OVEN LIGHT BULB
(MAIN OVEN)
Disconnect the appliance from the
electricity supply before replacing the
bulb.
The type of bulb required is a 300°C, 25 watt small
Edison Screw.
1. Make sure the appliance is cool before you
replace a bulb
2. Open the door and remove the shelves and
wirework runners.
3. Pull the glass bulb cover towards you and then
pull it off. If necessary use a screwdriver to
carefully lever off the cover, taking care not to
damage the oven cavity.
4. Unscrew the bulb by turning it to the left.
5. Fit a new bulb and then replace the glass bulb
cover.
6. Refit the wirework runners and replace the oven
shelves
7. Restore the appliance to the electricity supply and
reset the time of day.
REPLACING AN OVEN LIGHT BULB
(TOP OVEN)
The type of bulb required is a 300°C 25 watt small
Edison Screw.
Disconnect the appliance from the
electricity supply before replacing the bulb.
1. Make sure the appliance is cool before replacing
the bulb.
2. Open the door and remove the shelves and
wirework runners.
3. Remove the glass cover by turning it to the left.
4. Unscrew the bulb by turning it to the left.
5. Fit a new bulb and then replace the glass bulb
cover.
6. Refit the wirework runners and replace the oven
shelves.
7. Restore the electricity supply and reset the time